Washing-machine pounder.



G. 0. DUNHAM.

WASHING MACHINE POUNDER. APPLICATION FILED DEO.1,1910.

Patented J an. 9, 1912.

awmmtoz G001- a 0i Ell/707160771X STATES PATENT oFF oE.

GEORGE C.- DUNHAM, .OF CINCINNATI, OHIO.

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Specification of Lette'rs Patent.

PatentedJan..9 ,1 912,

Original application filed Ianuary. 14, 1910, Serial No. 538,079. Divided and this application filed Decemb r 1, 1910. serial No. 595,066. 4 v

it (I ll whom it may concern}:

Beit known that I, GEORGE C. DUNHAM,

residing at Cincinnati, in the, county of Hamilton and State of Ohio, have invented certain new and useful Improvements in" \Vashing-h/lachine Founders, of which the following is. a specification.

My invention is 'an'improved washing" machine pounder particularly designed for use in the machine which forms the sub ectmatter of my original agplication filed J anu- 'ary 14;, 1910, Serial q February I, 1911, #983,611, and of which.

0. 538,079, patented :and the compressor-pounder sections also conforming in their outlineor shape, each to substantiallyone-half the cross sectional outline of the tub in which they are used, thus insuring the greatestpossible capacity to the compressor-pounder.

"In its more subordinate nature, the inven-- tion also resides in those novel details of construction, combination and arrangement of parts, all of which will be first fully de scribed, specifically pointed out in the appended claims, and illustrated in the accompanying drawings, in which:

Figure -1, is a central vertical longitudinal section of the invention in use, the compressor-pounder sections being at the limit of their stroke in one direction. a Fig. 2, 1s a 1 perspective view of the invention. Fig. 3,

' bolted at 5, the bolts 5 passing the plate 4.

is an enlarged detail vertical section of one of the compressoi pounder head members.

Referring now to the accompanying drawings in which like letters and numerals of reference indicate like parts in all of the.

figures, 1 represents the tub or barrel which has its inner wall surface smooth, and is closed by a lid 2. The tub -1 is provided with a bracket 3 to which a block or plate 4 is The lid 2 is hinged at 6 to the plate 4 and has a stop 7 .to engage the plate 4' and sup- I suitable means.

ort the lid and its carried parts when tlie id is open. The lid is securely held down to effect a tight closure of the tub by any 9 is a postformed of a rod or pipe that is passed. through a central'hole in the lid 2 and secured rigidly in place by a collar 10' andnut 11, the post having an elbow 9 tern'iinating' in a pivot bolt or pm 9 to receive awalking beam 12. The Walking beam H 12 is secured to the pin to have pivotal movement thereon, and has a short arm 12 and a pair of alining long arms '12 at right angles to the arm 12. The arm 12? has a slot 12 near itsends for a purpose hereinafter to appear.

1313 are two hollow pipes which pass through holes in the lid and whose upper ends are slit at 13 to receive the ends of the arms 12 of the walking-beam 12 to which they are pivoted at 13". The arms 12 are slotted to permit passage of the pivot pins or bolts 13 and to form an opening into the pipe 13. The post 9, as before stated, is located centrally on the lid, while the pipes or hollow rods 13 pass through holes located about midway between the rim oi the lid and the center of. the lid."

it-bin the tub I the pipes 13 each carrya section of a compressor-pounder 14, formed of two-half sections, one ofwhich is attached to each pipe 13, and the compressorpounder 14, in plan view has an outline substantially that of the cross sectional outline of the tub. In other words, when the tub 1 is round or circular, in cross section, each compressor-pounder section will be of semicircular form.

Each eompressor-pounder section 14 comprises a base plate 14; and a depending rim la -1 1, the portion 14* of which is curved to conform tothe curvature of the tub, while the portion let is straight across. The ch'amber formed in the rim 14"14 is sub-divided by partitions 14 into a plurality of cpmpartments, the partitions 1 1: having porions cut away adjacent to the plate 14" to form air pass g The pipe. 13 passes through a hole in the base plate of the compressor-pounder section 14 and is secured 'thcretobya collar 15 and a valve casin 16 with the interposed washer17. The co lar 15 and valve casing 16 are threaded onto 'of.. A valve stop 16 the pipe 13, as indicated. Thevalve casing 16'has'a reduced part 16 that threads onto the pipe 13,- and an enlarged part 16* to receive the disk valve 16 that closes the end of the pipe 13 on the down stroke thereing 16 against which the valve 16 the up stroke of the pipe 13.

rests on -tion the clothes to .be washed are laced iii the tub 1 together wit the washing fluid.

the lid'issecureddown, thus eifecting a substantially tight closure of the tub. Power is then applied, to the walking beam and. the

' the clothes,

.As the compressor-pounder sections compressor-pounder sections are caused to move alternately up and down. This causes air to be admitted into the compressor pounder section chamberson the upstroke of the respective section through the pipes 13 and valve mechanism16. On the down stroke the pounder sections 14 is forced, through drawings. are the peras shown in Fig. 1 of the alternately moved up and down, clothes and washing fluid are caused to form a continuous oscillating motion, thus efiecting agitation of the same and b'ymaking' the fluld level about one-half or threefourths the tubs capacity, the clothes are alternately lifted out of the water and immersed under the same, as the sections 14 are reciprocated; By having the top fit tightly on the tub 1 the air from within the tub escapes but slowly. so'that a pressure greater-than atmospheric pressure. may be maintained within the tub during the washing operation to supply a greater quantity of air to the tub than is possible with an open tub and thereby affording a more abundant supply of oxygen to the washing fluid and thus assisting it in its detergent operations.

It will be noted that the lower open edge of the valve casing cup 16 is in a plane that intersects the partitions 14: at a place about the lower limit of the openings in said partitions so that there will always bean air space or'chamber iBn the pounder heads above the line :v-g in From the foregoing description taken in connection with the accompanying drawings, it is thought the complete construetion, operation and advantages of my invenis carried bythe cap- The pipe 13-' communicates with the-central compartment handy plate and a. depending rim,

wer device an operating lever 18 is se-l cured to the pivot 9" 18 may be of any ap-,

rend of said. cup lying in a air within the compressor, cup-llke mem er, ap1 together with the water, I

securing said pipe said leasing to said valve away to retain compressed airthe end of said pipe,

said casing.

tion will be readily understood by those skilled in the art to which the invention apv perta ns.

,Wha't'I claim is:

1. In a washing machine, a compressorpounder consisting of a plurality of sec-.

tions, a pipe for eachsection, a valve mechanism forleach section to control thepassage of air through said pipes, each of said pressor-pounder sections consistin of a and ividing partitions to form a plurality of chambers,

'said partitions having. apertures adjacent com:

to said plate to establish communication between said chambers, each of said compressor-pounder sectionshaving a cross-sec-' tional form or shape equivalent to that of one-half'the cross-sectional form of the tub of the washing machine to closely conform thereto, said valve mechanismincluding a valve casing or cup secured to said pipe within said' compressor-pounder, the open plane with the lowest .point of the outline of said partition apertures,-.being located adjacent to the top or closedend of the respective pounder sec tion, substantially as shown-and described. 2.. In a washing machine pounder, a body, consisting of a plate having :1 depending rim. extendin around the same to form a e having one end projected through saidody plate, means for 'to said body plate, said means including a valve casing, a valve in close over the end of said pipe,'means for limiting the movement of from the end of said pipe,

said body including partitio'ns connecting said run, said partitions having openings adjacent to said'body plate, the depth of said openingscorresponding to the depth of said valve casing whereby the open end of said valve casing will lie in a plane with,

the lower end of said openings.

3. A pounder consisting of ahead formedof a body plate and a depending rim surrounding the samc, partitions connecting the rim and dividing said head into a rality of compartments, each of said partitions having an opening next to said body plate and extending downwardly therefrom, a pipe projected through said'body plate, a collar threaded onto said pipe to engage the outer side of said body plate, a 'ivasher on said pipe withinsaid pounder head to engage the inner side of said body plate, a cup-shaped valve casing threaded on said pipe against said. washer, said valve casin having an enlarged portion for closing 0 and means carried by said valve casing for rounding the same, partitions connecting pluholding said valve in the rim anddividing said head into a plurality of compartments, each of said partia pipe projected throughs'aid' body plate, a

collar threaded onto saidpipe to engage "the outer side of said body plate, a washer on said pipe within said pounder head to engage theinner side of said body plate, a cup-shaped valve casing threaded on said pipe against said washer, said valve casing having an enlarged portion for closing 0 the end of said pipe, means carried by said valve easing for holding said yal ve in said casing, the lower or open end of said valve 15 casing lying in a plane that passesover the lower edge of said partition openings whereby to maintain air in all of the pounder head chambers between the opening of said valve casing and the inner face of said body 2 plate. I I

v GEORGE C. DUNI-IAM. v Witnesses:

' J. F. KINNEY, CHAS. J. BELL. 

